Datasheet > UM708SS

UM708SS

更新时间： 2024-09-26 01:04:59

品牌	Logo	应用领域
英联电子 - UNIONSEMI		/
页数	文件大小	规格书
17页	593K
描述
Supply Voltage Supervisor w/Watchdog Input and Manual Reset

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数据手册

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UM708SS 数据手册

UM706xS/UM708xS/UM813xS

Supply Voltage Supervisor w/Watchdog Input and Manual Reset

UM706xS SOP8

UM708xS SOP8

UM813xS SOP8

General Description

The UM706xS/UM708xS/UM813xS series are cost effective system power supply supervisory

circuits designed to monitor the power supplies in digital systems.

The UM706xS provides power-supply monitoring circuitry that generates a reset output during

power-up, power-down, and brownout conditions. The reset output remains operational with V_CC

as low as 1V. Independent watchdog monitoring circuitry is also provided. This is activated if the

watchdog input has not been toggled within 1.6 seconds. In addition, there is a 1.25V threshold

detector for power-fail warning, low battery detection, or to monitor an additional power supply.

An active low debounced manual reset input is also included.

The UM708xS is the same as the UM706xS, except an active-high reset is substituted for the

watchdog timer. The UM813xS is the same as the UM706xS, except RESET is provided instead

_____________

of RESET. All parts are available in a small outline SOP8 package.

Applications

Features



Applications Using DSPs, Microcontrollers  Wide Operation Voltage Range of 1V to

5.5V

or Microprocessors



Correct Logic Output Guaranteed to

V_CC=1.0V

Precision Supply-Voltage Monitor: 2.63V,

2.93V, 3.08V, 4.38V, 4.63V

200ms Reset Pulse Width



Programmable Controls

Computers

Embedded Systems

Industrial Equipments

Intelligent Instruments

Wireless Communications Systems



Independent

Watchdog

Timer-1.6s

Timeout (UM706xS, UM813xS)



Active-High Reset Output (UM708xS,

UM813xS)

Voltage Monitor for Power-Fail or

Low-Battery Warning



Temperature Range: -40°C to +85°C

Supply Current of 80μA (Typ)

Pin Configurations

Top View

V_CC

WDO

UM706

RESET

WDI

GND

PFI

PFO

XX: Week Code

UM706xS

SOP8

UM706xS

________________________________________________________________________

http://www.union-ic.com Rev.07 Aug.2015 1/17

12 3 4 5 6 7...17

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